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Aktuelle Fachpublikationen

A DFT study of planar vs. corrugated graphene-like carbon nitride (g-C3N4) and its role in the catalytic performance of CO2 conversion

Graphene-like carbon nitride (g-C3N4), a metal-free 2D material that is of interest as a CO2 reduction catalyst, is stabilised by corrugation in order to minimise the electronic repulsions experienced by the N lone pairs located in their structural holes. This conformational change not only ... mehr

Rate constant calculations of the GeH4 + OH/OD [rightward arrow] GeH3 + H2O/HOD reactions using an ab initio based full-dimensional potential energy surface

We report an analytical full-dimensional potential energy surface for the GeH4 + OH → GeH3 + H2O reaction based on ab initio calculations. It is a practically barrierless reaction with very high exothermicity and the presence of intermediate complexes in the entrance and exit channels, repr ... mehr

Factors controlling the selectivity for Na+ over Mg2+ in sodium transporters and enzymes

Na+ and Mg2+ play different crucial roles in biological systems. Both cations are present in comparable amounts in the cytosol, but how monovalent Na+ can compete with the divalent Mg2+, which can better accept charge from negatively charged ligands, in sodium transporters/enzymes has not b ... mehr

Modeling the melting temperature of nanoscaled bimetallic alloys

The effect of size, composition and dimension on the melting temperature of nanoscaled bimetallic alloys was investigated by considering the interatomic interaction. The established thermodynamics model without any arbitrarily adjustable parameters can be used to predict the melting tempera ... mehr

Boosting Catalyst Activity in Cis-Selective Semi-Reduction of Internal Alkynes by Tailoring the Assembly of All-Metal Aromatic Tri-Palladium Complexes

Highly symmetric [Pd3]+ clusters that present delocalized metal-metal bonds can catalyse the selective semi-reduction of internal alkynes to cis-alkenes. Studies on factors governing the formation of all-metal aromatics enabled the design of an optimised catalytic system that delivers cis-a ... mehr

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Label-free, ITO-based immunosensor for the detection of a cancer biomarker; Receptor for Activated C Kinase 1

A new quite sensitive disposable immunosensor, based on the anti-RACK1 antibody, was developed for the determination of Receptor for Activated C Kinase 1 (RACK1) for the first time. Moreover, indium tin oxide (ITO) PET films were modified by using an aldehyde ended silane 11-(triethoxysilyl ... mehr

Where is it and how much? Mapping and quantifying elements in single cells

The biological function of a chemical element in cells does not only require the determination of its intracellular quantity, but also the spatial distribution of its concentration. Different strategies can be employed to quantify and map the intracellular concentration of elements in singl ... mehr

Cell stretching devices as research tools: engineering and biological considerations

Cells within the human body are subjected to continuous, cyclic mechanical strain caused by various organ functions, movement, and growth. Cells are well known to have the ability to sense and respond to mechanical stimuli. This process is referred to as mechanotransduction. A better unders ... mehr

Multichannel detection of ionic currents through two nanopores fabricated on integrated Si3N4 membranes

Integration of solid-state nanopores and multichannel detection of signals from each nanopore are effective measures for realizing high-throughput nanopore sensors. In the present study, we demonstrated fabrication of Si3N4 membrane arrays and the simultaneous measurement of ionic currents ... mehr

“Chemical nose” biosensor for detecting proteins in complex mixtures

A growing understanding of the fundamental role of proteins in diseases has advanced the development of quantitative protein assays in the medical field. Current techniques for protein analysis include enzyme-linked immunosorbent assays (ELISA), flow cytometry, mass spectrometry, and immuno ... mehr

Alle Fachpublikationen zu Analytik

A DFT study of planar vs. corrugated graphene-like carbon nitride (g-C3N4) and its role in the catalytic performance of CO2 conversion

Graphene-like carbon nitride (g-C3N4), a metal-free 2D material that is of interest as a CO2 reduction catalyst, is stabilised by corrugation in order to minimise the electronic repulsions experienced by the N lone pairs located in their structural holes. This conformational change not only ... mehr

Rate constant calculations of the GeH4 + OH/OD [rightward arrow] GeH3 + H2O/HOD reactions using an ab initio based full-dimensional potential energy surface

We report an analytical full-dimensional potential energy surface for the GeH4 + OH → GeH3 + H2O reaction based on ab initio calculations. It is a practically barrierless reaction with very high exothermicity and the presence of intermediate complexes in the entrance and exit channels, repr ... mehr

Factors controlling the selectivity for Na+ over Mg2+ in sodium transporters and enzymes

Na+ and Mg2+ play different crucial roles in biological systems. Both cations are present in comparable amounts in the cytosol, but how monovalent Na+ can compete with the divalent Mg2+, which can better accept charge from negatively charged ligands, in sodium transporters/enzymes has not b ... mehr

Modeling the melting temperature of nanoscaled bimetallic alloys

The effect of size, composition and dimension on the melting temperature of nanoscaled bimetallic alloys was investigated by considering the interatomic interaction. The established thermodynamics model without any arbitrarily adjustable parameters can be used to predict the melting tempera ... mehr

Boosting Catalyst Activity in Cis-Selective Semi-Reduction of Internal Alkynes by Tailoring the Assembly of All-Metal Aromatic Tri-Palladium Complexes

Highly symmetric [Pd3]+ clusters that present delocalized metal-metal bonds can catalyse the selective semi-reduction of internal alkynes to cis-alkenes. Studies on factors governing the formation of all-metal aromatics enabled the design of an optimised catalytic system that delivers cis-a ... mehr

Alle Fachpublikationen zu Chemie

Autofluorescence multiphoton microscopy for visualization of tissue morphology and cellular dynamics in murine and human airways

Autofluorescence multiphoton microscopy for visualization of tissue morphology and cellular dynamics in murine and human airways Laboratory Investigation advance online publication, July 11 2016. doi:10.1038/labinvest.2016.69 Authors: Sarah Kretschmer, Mario Pieper, Gereon Hüt ... mehr

Inside the USCAP Journals

Inside the USCAP Journals Laboratory Investigation 96, 706 (July 2016). doi:10.1038/labinvest.2016.67 mehr

Inside the USCAP Journals

Inside the USCAP Journals Laboratory Investigation 96, 600 (June 2016). doi:10.1038/labinvest.2016.59 mehr

ApoA1 and ApoA1-specific self-antibodies in cardiovascular disease

ApoA1 and ApoA1-specific self-antibodies in cardiovascular disease Laboratory Investigation advance online publication, May 16 2016. doi:10.1038/labinvest.2016.56 Authors: Dimitry A Chistiakov, Alexander N Orekhov & Yuri V Bobryshev mehr

Inside the USCAP Journals

Inside the USCAP Journals Laboratory Investigation 96, 494 (May 2016). doi:10.1038/labinvest.2016.47 mehr

Alle Fachpublikationen zu Labortechnik

Removal of 2‐naphthoxyacetic acid from aqueous solution using quaternized chitosan beads

ABSTRACT The present study investigates the use of quaternized chitosan hydrogels for the adsorption of an aromatic organic carboxylate, 2‐naphthoxyacetic acid (2‐NAA), to demonstrate the applicability of this type of adsorbent towards the removal of naphthenic acids (NAs) from oil sand ... mehr

Experimental investigation of the innovative foaming device using gas as the sole power for firefighting

Foam is used as an efficient means of firefighting. The innovative foaming device using gas as the sole power is designed to replace the previous foam generating system using two or three power sources, and appropriate size of the new foaming device can be made to control dust and fire in h ... mehr

Phosphate removal by Ce(III)‐impregnated crosslinked chitosan complex from aqueous solutions

A novel adsorbent, Ce(III)‐impregnated crosslinked chitosan complex (Ce‐CCS) was prepared by the methods of membrane‐forming and crosslinking for the removal of phosphate from aqueous solutions. Ce‐CCS was characterized by FTIR, X‐ray diffraction, and scanning electron microscopy combined w ... mehr

Immobilization of lipase from Candida rugosa and its application for the synthesis of biodiesel in a two‐step process

Abstract Lipase from Candida rugosa was immobilized onto polystyrene‐divinylbenzene support for converting waste cooking oil to biodiesel using a two‐step process. The immobilization improved the thermal stability and stability at acidic pH. The adsorbed lipase was applied to the hydroly ... mehr

Experimental study of ultrasonic radiation on growth kinetic of asphaltene aggregation and deposition

Abstract Ultrasonic treatment as an economical and green technology has been much attended in petroleum industry, especially for inhibition and removal of asphaltene deposition in the near wellbore region. The performance of ultrasonic waves is affected by different parameters such as t ... mehr

Alle Fachpublikationen zu Verfahrenstechnik

Steroidal estrogen sources in a sewage-impacted coastal ocean

Estrogens are known to be potent endocrine disrupting chemicals that are commonly found in wastewater effluents at ng L-1 levels. Yet, we know very little about the distribution and fate of estrogens in coastal oceans that receive wastewater inputs. This study measured a wide range of stero ... mehr

The Origin and Evolution of Assessment Criteria for Persistent, Bioaccumulative and Toxic (PBT) Chemicals and Persistent Organic Pollutants (POPs)

General public concern over the effects of persistent chemicals began in the early 1960s. Since then, significant scientific advances have increased our understanding of persistent, bioacumulative, and toxic (PBT) chemicals and the properties and processes that influence their fates in, and ... mehr

Pollution effects on biochemical pathways determined in the polychaete Hediste diversicolor collected in three Portuguese estuaries

Biomonitoring is an important tool for the assessment of the quality and functions of ecosystems, providing information about the pollutants present and the direct effects that they exert in organisms. Biomonitoring relies upon the quantification of parameters that can be biochemical, genet ... mehr

Wildfires and Water Chemistry: Effect of Metals Associated with Wood Ash

The reactivity of metals associated with ash from wood collected from the Valles Caldera National Preserve, Jemez Mountains, New Mexico was assessed through a series of laboratory experiments, integrating aqueous chemistry, spectroscopy, and microscopy measurements. Climate change has cause ... mehr

Sustainability, Vol. 8, Pages 684: Conjoint Analysis of Farmers’ Response to Conservation Incentives

Environmental degradation threatens the long term resiliency of the US food and farming system. While USDA has provided conservation incentives for the adoption of best management practices (BMPs), only a small percentage of farms have participated in such conservation programs. This study ... mehr

Alle Fachpublikationen zu Umwelttechnik
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